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 DANVERS, Mass. (AP) - Flammable vapors collected, then ignited in a seismic explosion after employees at a paint and ink factory shut off a ventilation system that neighbors had complained was too noisy, investigators said Wednesday.
The blast damaged 270 homes and businesses in the Danversport neighborhood and was felt 25 miles away. Sixteen homes and six businesses were ordered demolished, but no one was killed or seriously injured in the Nov. 22 explosion.
The U.S. Chemical Safety and Hazard Investigation Board concluded in a preliminary report released Wednesday that solvents, left stirring overnight in an unsealed mixing tank, released flammable vapor that accumulated and ignited.
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